Vault 32

Chapter 148 Central Air Conditioning System
The tunnel of the No. [-] cave has been widened a lot in two months, and thanks to the hard work of the marines, it took more than a week of busy work with detonators and pickaxes to clear the tunnel. Fully widen through.One must know that the tunnels in the past were only forced to the sideways to allow people to pass through.

While walking forward in the tunnel, Liszt raised his head slightly in surprise, a gust of cool air caressed his face, and at the same time it blew towards the cave behind him.Licking the corner of his mouth lightly, he looked up at the entrance of the cave with a little light, and couldn't help but nodded slightly: "This wind feels really good."

The cool air makes people feel refreshed, and the continuous wind seems to push the originally dull air in the tunnel, bringing the freshness of the heavy snow outside.Slightly tilting his head and looking forward, there was also a little cheering at the end of the tunnel. Carl raised his mouth and nodded slightly with a smile: "It seems that the exhaust system of our No. [-] cave has also been set up. gone."

"Well, this wind seems to be able to meet most of the air needs."

Underground fortifications will always be equipped with a large number of ventilation holes, and Liszt also expressed his deep appreciation for this.When he came to these caves, he could feel obvious suffocation, and there was also a strange smell in the air.Especially with a large number of soldiers pouring into a cave, sometimes there will be shortness of breath.

This is undoubtedly a phenomenon of insufficient oxygen, and it also shows that the original cracks in these caves and the ventilation holes leading to the outside are not enough to allow so many people to breathe.It seems that people have difficulty breathing in daily life now. Once the war breaks out and some ventilation holes are covered by artillery fire and collapsed, it will not only be a problem of difficulty breathing.

This is also the task that Liszt requires to complete when preparing to transform the cave, and the importance level is directly at the forefront.After all, he can exchange for clean drinking water or delicious food, because after this mountain area is blocked, supplies cannot be purchased and transported at all, and can only be made up by exchange or a small amount of self-sufficiency.

But human beings depend on it for survival, and the air that is ubiquitous in almost the entire space, he does not have this luxury to exchange for.Although there is oxygen for diving or medical use, it is obvious that just opening a few external openings and borrowing the ventilation function of the original tunnel can make breathing smoother, which is much more convenient than directly exchanging air.

"Is this widening the tunnel? But it's too big."

As soon as he walked out of the passage, Liszt saw the soldiers who were still busy at the front. They were all helping each other and carrying the sandbag that seemed to be full. About [-] meter away, I couldn't help frowning slightly: "Is this wind also coming from there?"

He could feel the slightly cool air blowing gently from the hollow that had been dug out. It circled a few times in Cave No. [-] and then continued to blow into the caves along the passage.But he looked at the rock wall that was still being excavated, and it had already been excavated into the rock wall for about four meters. It seemed that the amount of work had been going on for a long time.

The members of the Marine Corps each had a very clear division of labor. With the pickaxe waving inside, the rock wall that had been blasted by the detonator was cut open, and the large and small pieces The stone also slid down to the ground, and was packed in sandbags by other soldiers with shovels, and then picked up by other soldiers and quickly transported away, walking towards the tunnel of No. tacit agreement.

"They threw the gravel under the cliff of cave No. [-]."

With a smile on his face, Carl immediately took out the notebook in his arms for Liszt's question, flipped through a few pages, and quickly handed it to Liszt, pointing to the model on it and explaining: "What we found This vent belongs to the windward position, which simply widens the space inside, and can inject a large amount of air anytime and anywhere without the need for an exhaust fan."

Slightly frowning, Liszt looked at the graphic above, which was a large machine-like thing filling the excavated rock wall.Carl was also very open about the matter, and said with pride in his tone: "The next plan, we plan to widen the tops of all cave tunnels, leaving room for the installation of exhaust systems and wiring!"

"Central air conditioning?"

Liszt raised his eyebrows slightly. He looked at the pipes on the notebook, and immediately remembered the central air conditioners in offices or shopping malls.This kind of machine that can be regulated and can meet the most basic oxygen needs and transport a large amount of air into a closed environment is undoubtedly in line with the needs of the current cave group.

He carefully looked at the graphics that had been sketched in pencil on his notebook. The ventilation ducts had been spread throughout the entire cave group, and all the vents had been connected.But he still frowned slightly, looked up at the hollow that was still being dug, and couldn't help asking: "This doesn't seem to be a complete central air conditioner?"

Carl also nodded. He also carefully analyzed the surrounding terrain for this ventilation system, and then came to a scientific conclusion. He proudly pointed to the line on the notebook and said: "The consumption of the central air conditioner is too large. We are very passive without energy output." He said, also paused slightly, and continued: "But the entrance of the cave we are in is the downwind of this mountain canyon, and there are mountain winds blowing all year round, so Why not use their own power?"

Looking at the lines outlined in the notebook, Liszt couldn't help but praise Carl, a talented student. He just borrowed the mountain wind from the outside and used the pipes connecting all the caves as a medium to complete the ventilation function of the central air conditioner.And as long as this project is completed, the ventilation problem in the cave has basically been solved.

"An abnormal situation was found!"

But while the two were still talking about the central ventilation system, a Marine Corps soldier quickly ran over in the tunnel of Cave No. [-] with a gun in his hand.Although he was a little out of breath, there was not much panic on his face. He rushed out of the passage and saw Liszt and Karl not far away. Our area is advancing, standard reconnaissance team, no heavy firepower is found, no air helicopter support is found!"

(End of this chapter)